MESON Chess Problem Database

Problem Display
PID: 151466 (1Q5b/R7/2P1k1p1/6P1/2Ppp2K/8/8/8 w - - 0 1)

Keidanski, Theodore Hermann

Rivista Scacchistica Italiana, 1903

1Q5b/R7/2P1k1p1/6P1/2Ppp2K/8/8/8

#2

6 + 5

119 Tidskrift for Schack 1909
5454 Near Snap 2014

SOLUTION

  • SOUND
  • Tries
    • 1.Qb5?
      • threat
        • 2.Qd5#
      • 1...Kd6
        • 2.Qd5#
      • 1...Be5!
    • 1.Qxh8?
      • threat
        • 2.Qf6#
      • 1...Kf5
        • 2.Qf6#
      • 1...Kd6!
  • Keys
    • 1.c7!
      • threat
        • 2.c8Q#
        • 2.c8B#
      • 1...Ke5
        • 2.c8Q#
        • 2.c8B#
      • 1...Kf5
        • 2.c8Q#
        • 2.c8B#
      • 1...Kd6
        • 2.c8Q#
      • 1...Kd7
        • 2.c8Q#
      • 1...Ke7
        • 2.c8Q#
      • 1...Kf7
        • 2.c8Q#
      • 1...Be5
        • 2.c8Q#
        • 2.c8B#
      • 1...Bf6
        • 2.c8Q#
        • 2.c8B#
      • 1...Bg7
        • 2.c8Q#
        • 2.c8B#
      • 1...d3
        • 2.c8Q#
        • 2.c8B#
      • 1...e3
        • 2.c8Q#
        • 2.c8B#

Anticipated by 2676(1901)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(F);
      • Threat
        • QAB1(F)
      • Vars
        • K(c);P-FLIGHT::QAR1(F)
      • Refutation
        • B(e);
    • Try
      • Q(F);XB(e)
      • Threat
        • QAR1(F)
      • Vars
        • K(c);S_FLIGHT::QAR1(F)
      • Refutation
        • K(c);P-FLIGHT
  • Actual
    • P(D);
    • Threat
      • P=Q
    • Vars
      • K(c);P-FLIGHT::P=Q
      • K(c);S_FLIGHT::P=Q
      • B(e);::P=Q
      • B(e);P_PINP(C)::P=Q
      • P(a);::P=Q
      • P(b);::P=Q
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Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).